Roller structure

ABSTRACT

The present invention relates to a roller structure, which includes a shaft and a roller. The roller is mounted outside an outer diameter of the shaft. The roller has an outside surface forming mutually-parallel, successively-arranged, circumferentially-extending concentric circular or helical contact sections to reduce the area that the circumferentially-extending contact sections occupies the outside surface of the roller. Each circumferentially-extending local contact section provides linear contact to drive a paper sheet having a single surface carrying an adhesive layer to allow a back surface of the paper to be subjected to printing or other processing. As such, the present invention realizes stable feeding of paper and easy operation, avoiding paper jam caused by sticking of paper and reduction of efficiency of printing operation that lead to damage of machine and increase of operation cost.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a roller structure, and more particularto a remote interactive monitoring and alarm system utilizing atelevision apparatus which equipped with a video-song accompanimentfunction that is suitable to be set in homes, companies, stores, andetc.

2. Description of Related Art

A conventional roller structure comprises a shaft 10 a and a roller 20 a(see FIG. 1). The roller 20 a is mounted to an outer surface of theshaft 10 a. The roller 20 a has an outer surface that forms irregularembossed contact sections 21 a to drive a paper sheet that has anadhesive layer. However, after a period of use, the irregular embossedcontact sections 21 a get worn out and become flattened, so that thecontact area is between the embossed contact sections 21 a and the papersheet with adhesive layer becomes increased, whereby when the papersheet with adhesive layer is fed, sticking and wrapping around theroller may happen, making it not possible efficiently pass the paperthrough, and the machine operation must be shut down to fix thesituation of sticking and wrapping. This increases the cost of printingon the paper sheet with adhesive layer and the time-consuming operationof trouble shooting is inconvenient for the conventional release paperthat has a single-sided adhesive layer. Apparently, the conventionalroller structure must be further improved.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a rollerstructure. The roller structure provides a combined arrangement thatcomprises a shaft and a roller that has an outside surface formingmutually-parallel, successively-arranged, circumferentially-extendingcontact sections. The mutually-parallel, successively-arranged,circumferentially-extending contact sections formed on the outsidesurface of the roller provides linear contact for driving, throughrotation thereof, a paper sheet having a surface carrying an adhesivelayer so that the contact area between the outside surface of the rollerand the adhesive layer is reduced to thereby effectively and stablydrive the paper sheet with adhesive layer and prevent the paper sheetwith adhesive layer from sticking to and wrapping around the rollerthereby realizing stable feeding paper and easy and convenientoperation, and thus greatly improving overall practicability andconvenience of the operation of the present invention.

The secondary objective of the present invention is to provide a rollerstructure, in which the roller comprises an elastic body in order tocushion the acting force between mutually-parallel successively-arrangedcontact sections formed on the outside surface of the roller and thecontact surface of the paper sheet with adhesive layer, whereby wear ofthe mutually-parallel, successively-arranged,circumferentially-extending contact sections of the outside surface ofthe roller can be reduced to realize advantages of reducing wear,increasing the time period when the present invention maintainsexcellent operation efficiency, and greatly improving overallconvenience of the present invention.

A further objective of the present invention is to provide a rollerstructure, in which the arrangement of the mutually-parallel,successively-arranged contact sections formed on the outside surface ofthe roller is such that after a period of use, although the surfaces ofthe mutually-parallel, successively-arranged contact sections formed onthe outside surface of the roller may get locally worn, yet themutually-parallel successively-arranged concentric circular or helicalcontact sections that circumferentially extend along the outside surfaceof the roller according to the present invention are still of asubstantial thickness, so that in operation, it is not possible to betroubled by the problem of the conventional roller structure that thepaper sheet with adhesive layer get sticking to and wrapping around theroller due to the contact sections being worn flat, whereby the presentinvention ensures uniform and stable feeding of paper, easy operationand increased operation efficiency, and thus improving overallfunctionality and convenience of the present invention.

In order to achieve the foregoing objectives, the present inventionprovides a roller structure, which comprises a shaft and a roller. Theroller is mounted outside an outer diameter of the shaft. The roller hasan outside surface that forms mutually-parallel, successively-arranged,circumferentially-extending concentric circular or helical contactsections for fast driving a paper sheet having a single surface carryingan adhesive layer. As such, advantages of uniform and stable feeding ofpaper and reducing troubles of sticking and wrapping are realized.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention can be fully understood from the followingdetailed description and preferred embodiment with reference to theaccompanying drawings, in which:

FIG. 1 is a perspective view showing a conventional roller;

FIG. 2 is a perspective view showing the present invention;

FIGS. 3 is a cross-sectional view showing a use condition of the presentinvention;

FIG. 4 is a perspective view showing another embodiment of the presentinvention; and

FIG. 5 is a cross-sectional view showing a use condition of said anotherembodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to the drawings and in particular to FIGS. 2-5, thepresent invention provides a roller structure, which comprises:

a shaft 10; and

a roller 20, in which the roller 20 is mounted outside an outer diameterof the shaft 10, the roller 20 having a outside surface that formsmutually-parallel, successively-arranged, circumferentially extendingcontact sections 21 to uniformly and stably drives a paper sheet 30having a single surface carrying an adhesive layer.

The mutually-parallel, successively-arranged,circumferentially-extending contact sections 21 formed on the outsidesurface of the roller 20 can be helically-extending contact sections 21or can be a plurality of identical circular contact sections 21 havingouter circumferences that are concentric. The helically-extendingcontact sections 21 and the concentric outer circumference contactsections 21 both have a cross-section showing successive sharpcone-shaped projections. The roller 20 can be an elastic body.

With the roller structure constructed according to the above describedstructure, as shown in FIGS. 2-5, the feature of the present inventionis a combined arrangement of a shaft 10 and a roller 20, in which theroller 20 is mounted outside an outer diameter of the shaft 10 and theroller 20 has an outside surface forming mutually-parallel,successively-arranged, circumferentially-extending contact sections 21to uniformly and stably drive a paper sheet 30 with an adhesive layer,where the mutually-parallel, successively-arranged,circumferentially-extending contact sections 21 formed on the outsidesurface of the roller 20 provides linear contact that results in areduced contact area with the paper surface adhesive layer 31 that showssticking property and the frictional force in the contact surface isuniform, whereby the paper sheet 30 with the adhesive layer 31 can beeffectively and smoothly driven, avoiding the paper sheet 30 with theadhesive layer 31 sticking to and wrapping around the roller andallowing the paper layer 32 on the opposite side of the adhesive layer31 to be subjected to printing or other processing. Further, with theroller 20 being an elastic body, cushioning of the force acting betweenthe mutually-parallel, successively-arranged,circumferentially-extending contact sections 21 formed on the outsidesurface of the roller 20 and the contact surface of the paper surfaceadhesive layer 31 of the paper sheet 30 with the adhesive layer 31 canbe realized, thereby reducing wear therebetween. After a period of use,the surfaces of the mutually-parallel, successively-arranged,circumferentially-extending contact sections 21 formed on the outsidesurface of the roller 20 are subjected to wearing, yet themutually-parallel, successively-arranged, circumferentially-extendingconcentric circles or helical contact sections 21 that are formed on theoutside surface of the roller 20 according to the present invention arestill of a substantial thickness, so that the operation will not betroubled by the problems of the conventional device that the paper sheetwith adhesive layer 31 sticking and wrapping around the roller when thecontact sections 21 get worn flat. Thus, the present invention realizesuniform and stable feeding of paper sheet, easy operation, and highoperation efficiency, improving overall practicability and convenience.Further, the roller structure according to the present invention can besuch that the pitch or spacing between the mutually-parallel,successively-arranged, circumferentially-extending concentric circularor helical contact sections 21 formed on the outside surface of theroller 20 can be locally adjusted to accommodate variation or differenceof adhesion of the adhesive layer 31, thereby further improving thefunction of the roller structure according to the present invention inuniform and stable feeding of paper.

Based on the above detailed description, those skilled in the art mayappreciate that the present invention can achieve the above discussedobjectives. However, it is noted that the above description is made onlyto a preferred embodiment of the present invention and is not intendingto limit the true scope where the present invention may be put intopractice. Thus, simple and equivalent variations and modifications madeon the disclosure of the specification and the attached claims are allconsidered within the scope of the present invention.

What is claimed is:
 1. A roller structure, the roller structurecomprising: a shaft, and a roller, which is mounted outside an outerdiameter of the shaft and has an outside surface formingmutually-parallel, successively-arranged, circumferentially-extendingcontact sections adapted to uniformly drive a paper sheet having asingle surface carrying an adhesive layer.
 2. The roller structureaccording to claim 1, wherein themutually-parallel,successively-arranged,circumferentially-extendingcontact sections formed on the outside surface of the roller comprisehelically-extending contact sections, and the contact sections have across-section showing successive sharp conic-shaped projections.
 3. Theroller structure according to claim 1, wherein the mutually-parallel,successively-arranged, circumferentially-extending contact sectionsformed on the outside surface of the roller comprise contact sectionshaving outer circumference that are concentric circles and the contactsections have a cross-section showing successive sharp conic-shapedprojections.
 4. The roller structure according to claim 1, wherein theroller comprises an elastic body.
 5. The roller structure according toclaim 2, wherein the roller comprises an elastic body.
 6. The rollerstructure according to claim 3, wherein the roller comprises an elasticbody.
 7. The roller structure according to claim 1, wherein spacingbetween the contact sections are locally adjustable.
 8. The rollerstructure according to claim 2, wherein spacing between the contactsections are locally adjustable.
 9. The roller structure according toclaim 3, wherein spacing between the contact sections are locallyadjustable.